Commit cf92d78a authored by Tao Jiang's avatar Tao Jiang Committed by Keith Busch
Browse files

nvme-pci: add quirk for Memblaze Pblaze5 (0x1c5f:0x0555) 



The Memblaze Pblaze5 NVMe device (PCI ID 0x1c5f:0x0555)
is detected as a controller on recent kernels (tested on 5.15.85
and 6.8.4), but no namespace is exposed.

Tools like lsblk and fdisk do not report any block device.

dmesg shows:
  nvme nvme0: missing or invalid SUBNQN field.

The device works correctly on older kernels (e.g. 4.19), suggesting
a compatibility issue with newer namespace handling.

This indicates the device does not properly support the
Namespace Descriptor List feature.

Applying NVME_QUIRK_NO_NS_DESC_LIST allows the namespace to be
discovered correctly.

Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
Reviewed-by: default avatarChaitanya Kulkarni <kch@nvidia.com>
Signed-off-by: default avatarTao Jiang <tanroame.kyle@gmail.com>
Signed-off-by: default avatarKeith Busch <kbusch@kernel.org>
parent 3f150f0f

drivers/nvme/host/pci.c

+2 −0
Original line number Diff line number Diff line
@@ -4102,6 +4102,8 @@ static const struct pci_device_id nvme_id_table[] = { 
		.driver_data = NVME_QUIRK_DELAY_BEFORE_CHK_RDY, },

	{ PCI_DEVICE(0x1c5f, 0x0540),	/* Memblaze Pblaze4 adapter */

		.driver_data = NVME_QUIRK_DELAY_BEFORE_CHK_RDY, },

	{ PCI_DEVICE(0x1c5f, 0x0555),	/* Memblaze Pblaze5 adapter */

		.driver_data = NVME_QUIRK_NO_NS_DESC_LIST, },

	{ PCI_DEVICE(0x144d, 0xa808),	/* Samsung PM981/983 */

		.driver_data = NVME_QUIRK_IGNORE_DEV_SUBNQN, },

	{ PCI_DEVICE(0x144d, 0xa821),   /* Samsung PM1725 */